期刊
BIOCONJUGATE CHEMISTRY
卷 32, 期 1, 页码 153-160出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.bioconjchem.0c00587
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资金
- Japan Society for the Promotion of Science (JSPS) [19K21133, 20K15403, 20K05740]
- Platform Project for Supporting Drug Discovery and Life Science Research (Basis for Supporting Innovative Drug Discovery and Life Science Research (BINDS)) from AMED [JP20am0101110, 2578]
- Grants-in-Aid for Scientific Research [20K15403, 20K05740] Funding Source: KAKEN
This study successfully disrupted and reconstituted the quaternary structure of ApPrx through amino acid mutations and chemical modifications. The research demonstrates a facile method to regulate the protein assembly state.
Direct control of the protein quaternary structure (QS) is challenging owing to the complexity of the protein structure. As a protein with a characteristic QS, peroxiredoxin from Aeropyrum pernix K1 (ApPrx) forms a decamer, wherein five dimers associate to form a ring. Here, we disrupted and reconstituted ApPrx QS via amino acid mutations and chemical modifications targeting hot spots for protein assembly. The decameric QS of an ApPrx* mutant, wherein all cysteine residues in wild-type ApPrx were mutated to serine, was destructed to dimers via an F80C mutation. The dimeric ApPrx*F80C mutant was then modified with a small molecule and successfully assembled as a decamer. Structural analysis confirmed that an artificially installed chemical moiety potentially facilitates suitable protein-protein interactions to rebuild a native structure. Rebuilding of dodecamer was also achieved through an additional amino acid mutation. This study describes a facile method to regulate the protein assembly state.
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